Study On Ship Emission List In Dalian Port

Dalian ports shipping business is busy,the number and the tonnage of ships entering and leaving the port is increasing,but also for the local air pollution and greenhouse gases.In order to protect people's living environment,to the developed countries on the maritime emissions of governance in line,the urgent need for domestic ship emissions to make more in-depth study.Only by understanding the number and characteristics of the ship's emissions,we can provide a more scientific basis for decision-making and effective governance measures.This paper estimates the emissions of NOx,CO,HC,CO2,SO2 and PM in Dalian ports,which are 8527t,721t,331t,822651t,9122t and 1165t respectively.Through the analysis of the results of the emission inventory,the emission characteristics of the ship are obtained.This paper chooses the "bottom-up" approach to study the ship's emissions in Dalian.The calculation model is established for the selected area and divided into cruise,deceleration,maneuvering and berthing according to the ship sailing stage.The distance length and the time of the ship's activities are obtained through AIS statistics.The rated power of main engine in the calculation model parameters and the design speed of the ship are studied.The relationship between the rated power of main engine and the total tonnage of the ship and the design speed of the ship and the total tonnage of the ship are mainly fitted.The emission factor in the parameter is also from the localized bench-based test.It is considered that the emission factors of the ship's main engine and the auxiliary machine are input to the calculation model with different values under different operating conditions.In this paper,the selection of the power of the auxiliary engine is derived from other literature research,mainly through the ratio of he power of the auxiliary engine and the power of main engine.Rrated power of boiler is derived from the Los Angeles port when preparing ship emissions inventories.Based on the statistical data of the AIS system,this paper summarizes the process of the ship's activities and builds up the calculation model of the ship's discharge in Dalian port based on the "bottom-up" method,and combines the maritime department's statistics on the number of ships entering and leaving the port in Dalian,Measured the Dalian port ship emissions list.The results of the inventory study were analyzed.Based on the volume of water transport,the calculation and forecast of Dalian water transport gas emissions.